How to make ViewPager auto play with a simple recursion function in android

Today a new request for ViewPager, will set ViewPager auto play, in last code is user Handler, but I want a new way to finish it.

private void autoPlay(ViewPager viewPager) {
    viewPager.postDelayed(new Runnable() {
        @Override
        public void run() {
            try {
                if (adapter != null && viewPager.getAdapter().getCount() > 0) {
                    int position = currentCount % adapter.getCount();
                    currentCount++;
                    viewPager.setCurrentItem(position);
                    autoPlay(viewPager);
                }
            } catch (Exception e) {
                Log.e(TAG, "auto scroll pager error.", e);
            }
        }
    }, 3000);
}

So I do like that , user recursion is very simple and fast.  That is.